This is less than and more than questions

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?